Plug-in connector for medical tubes

Patent metadata

Field	Value
Publication number	US-10213591-B2
Application number	US-49337809-A
Country	US
Kind code	B2
Filing date	Jun 29, 2009
Priority date	Aug 29, 2008
Publication date	Feb 26, 2019
Grant date	Feb 26, 2019

Abstract

A second part extending around a first part in a plugged-together state. The second part has snap-in element with an inwardly protruding projection for meshing with a complementary recess on an outer surface of the first part to hold the second part fixed in the axial direction on the first part. Both parts have a central passage opening. One part has an end area expanding towards the outlet opening in a connection area, and the other part is connected to an elastic section, arranged in its interior. The front end of the elastic section is pressed into contact with the expanded end area of the opposite part. The projection of the snap-in element maintains the first and second parts meshed together, so that the elastic section exerts a sealing function due to the pressure on the expanding end area.

First claim

What is claimed is:

1. A medical system comprising:
a medical tube plug-in connector comprising an elastic section, a first plug-in part and a second plug-in part, wherein the second plug-in part extends around the first plug-in part in a plugged-together state, wherein the second plug-in part has at least one forwardly protruding snap-in element, which has at a front end at least one inwardly protruding projection, which is provided for engaging a complementary recess in an outer surface of the first plug-in part in order to hold the second plug-in part fixed in an axial direction on the first plug-in part due to the projection meshing with the recess, each of the first plug-in part and the second plug-in part having a central passage opening, one of the first plug-in part and the second plug-in part having a surface defining an open end area radially expanding as a function of axial position towards an outlet opening in a connection area and the other of the first plug-in part and the second plug-in part being connected to the elastic section with the elastic section arranged in an interior thereof, said open end area being in communication with one end of said central passage of said one plug-in part, the elastic section protruding into the connection area, so that an outer and axially facing front end surface of the elastic section is pressed into contact with the surface defining the expanded end area of the opposite one of the first plug-in part and the second plug-in part when the projection of the at least one snap-in element maintains the second plug-in part meshed with the first plug-in part, so that the axially facing front end surface of the elastic section exerts a sealing function due to a pressure of the elastic section on the surface defining the expanding end area;
a sphygmomanometer cuff for detecting the blood pressure;
a medical tube connected to said sphygmomanometer cuff, said central passage and said open end area of said one plug-in part being in communication with a passage of said medical tube;
a monitor for analysis and display of the blood pressure of a test subject, said sphygmomanometer cuff being connected to said monitor by said medical tube and said medical tube plug-in connector.

2. A medical system in accordance with claim 1 , wherein the elastic section comprises a front end of said medical tube connected to one of the first plug-in part and the second plug-in part.

3. A medical system in accordance with claim 1 , wherein:
the elastic section is made in one piece with one of the first plug-in part and the second plug-in part; and
a material of the elastic section is manufactured with a lower Shore hardness than at least one of the plug-in parts.

4. A medical system in accordance with claim 3 , wherein one of the first plug-in part and the second plug-in part is manufactured from an elastic material with a lower Shore hardness than the other plug-in part; and
the elastic section consists essentially of one or more of a thermoplastic elastomer and a thermoplastic polyurethane.

5. A medical system in accordance with claim 1 , wherein:
said other plug-in part has another end connected to said medical tube, an internal diameter of said elastic section is equal to an internal diameter of the passage of said medical tube, said an internal diameter of said elastic section is also equal to an internal diameter of said central passage of said one plug-in part.

6. A medical system in accordance with claim 1 , wherein:
said other plug-in part is connected to said medical tube, said medical tube extending through said other plug-in part to have an end of said medical tube form said elastic section, internal and external diameters of said elastic section and said medical tube being equal, said internal diameter of said elastic section and said medical tube being equal to an internal diameter of said central passage of said one plug-in part.

7. A medical system in accordance with claim 1 , wherein:
said open end radially expands completely around said central passage opening.

8. A medical system in accordance with claim 1 , wherein:
said axially facing front end surface is in a plane perpendicular to an axial direction of said one plug-part;
said axially facing front end surface is at a most distal end of said elastic section;
said elastic section has a protruding end protruding past a portion of said other plug-in part;
an internal diameter of said radially expanding open end area at an outermost end is larger than an external diameter of said protruding end of said elastic section;
an internal diameter of said expanding open end area at another end of said expanding open end area is smaller than said external diameter of said elastic section.

9. A medical system in accordance with claim 1 , wherein:
said elastic section has a circumferential surface extending circumferentially around an outside of said elastic section, said circumferential surface intersecting with said axially facing front end surface at an edge;
said edge being arranged to be pressed into said expanding open end area and pressed into contact with said expanding open end area of said one plug-in part in said plugged together state to form an annular circumferential pressing surface, said pressing surface forming a seal with said open end area due to an axial pressure of said elastic section on said end area caused by said plugged together state.

10. A medical system connector in accordance with claim 1 , wherein:
said expanding open end area is in communication with one end of said central passage of said one plug-in part;
said central passage of said one plug-in part has another end adapted to be in communication with the passage of the respective tube.

11. A noninvasive blood pressure measuring system process comprising the steps of:
providing a medical tube plug-in connector comprising an elastic section, a first plug-in part and a second plug-in part, wherein the second plug-in part extends around the first plug-in part in a plugged-together state, wherein the second plug-in part has at least one forwardly protruding snap-in element, which has at a front end at least one inwardly protruding projection, which is provided for engaging a complementary recess in an outer surface of the first plug-in part in order to hold the second plug-in part fixed in an axial direction on the first plug-in part due to the projection meshing with the recess, each of the first plug-in part and the second plug-in part having a central passage opening, one of the first plug-in part and the second plug-in part having a surface defining an open end area radially expanding as said open end area axially extends towards an outlet opening in a connection area and the other of the first plug-in part and the second plug-in part being connected to the elastic section with the elastic section arranged in an interior thereof, said open end area being in communication with one end of said central passage of said one plug-in part, the elastic section protruding into the connection area, so that an outer and axially facing front end surface of the elastic section is pressed into contact with the surface defining the expanded end area of the opposite one of the first plug-in part and the second plug-in part when the projection of the at least one snap-in element maintains the second plug-in part meshed with the first plug-in part, so that the axially facing front end surface of the elastic section exerts a sealing function due to a pressure of the elastic section on the surface defining the expanding end area;
providing a sphygmomanometer cuff for detecting a blood pressure;
providing a medical tube connected to said sph

Assignees

• Grassl Thomas
• Koulechov Kirill
• Draegerwerk Ag & Co Kgaa

Inventors

• Grassl Thomas
• Koulechov Kirill

Classifications

• A61M39/12 Primary

  for joining a flexible tube to a rigid attachment · CPC title

• F16L37/0925

  with rings which bite into the wall of the pipe · CPC title

• A61M39/1011

  Locking means for securing connection; Additional tamper safeties (A61M39/16 takes precedence) · CPC title